PTHREAD_ATTR_SETSCHEDPOLICY(3) Linux Programmer's Manual PTHREAD_ATTR_SETSCHEDPOLICY(3)NAME
pthread_attr_setschedpolicy, pthread_attr_getschedpolicy - set/get scheduling policy
attribute in thread attributes object
SYNOPSIS
#include <pthread.h>
int pthread_attr_setschedpolicy(pthread_attr_t *attr, int policy);
int pthread_attr_getschedpolicy(pthread_attr_t *attr, int *policy);
Compile and link with -pthread.
DESCRIPTION
The pthread_attr_setschedpolicy() function sets the scheduling policy attribute of the
thread attributes object referred to by attr to the value specified in policy. This
attribute determines the scheduling policy of a thread created using the thread attributes
object attr.
The supported values for policy are SCHED_FIFO, SCHED_RR, and SCHED_OTHER, with the seman-
tics described in sched_setscheduler(2).
The pthread_attr_getschedpolicy() returns the scheduling policy attribute of the thread
attributes object attr in the buffer pointed to by policy.
In order for the policy setting made by pthread_attr_setschedpolicy() to have effect when
calling pthread_create(3), the caller must use pthread_attr_setinheritsched(3) to set the
inherit-scheduler attribute of the attributes object attr to PTHREAD_EXPLICIT_SCHED.
RETURN VALUE
On success, these functions return 0; on error, they return a nonzero error number.
ERRORS
pthread_attr_setschedpolicy() can fail with the following error:
EINVAL Invalid value in policy.
POSIX.1-2001 also documents an optional ENOTSUP error ("attempt was made to set the
attribute to an unsupported value") for pthread_attr_setschedpolicy().
CONFORMING TO
POSIX.1-2001.
EXAMPLE
See pthread_setschedparam(3).
SEE ALSOsched_setscheduler(2), pthread_attr_init(3), pthread_attr_setinheritsched(3),
pthread_attr_setschedparam(3), pthread_create(3), pthread_setschedparam(3),
pthread_setschedprio(3), pthreads(7)COLOPHON
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http://www.kernel.org/doc/man-pages/.
Linux 2013-06-21 PTHREAD_ATTR_SETSCHEDPOLICY(3)